Front end alignment by a qualified shop is a must.
When I bought my rig (used) it was all over the road & I thought it needed front shocks. After a trip to the alignment place it was night & day better in every aspect.
1 Side was out of spec enough that I had them put in an aftermarket caster/camber sleeve that allowed them to put that side well back within specs. Apparently Ford doesn't send them off the line with adjustable parts in that area of the suspension. I was charged $60 for that part & the install.... money well spent.